HVAC in Old Town Fort Collins is heating and cooling work built for a historic district, not a suburban subdivision. The housing stock around Old Town Square and Mountain Avenue runs from 1890s brick bungalows to converted commercial lofts, and each one moves air differently. Many of these homes were built before central air conditioning existed, with thin stud spacing, shallow wall cavities and rectangular ductwork squeezed in decades later — the classic “AC runs nonstop, upstairs still hot” complaint. Ductless mini-splits and high-wall heat pumps that bypass the ducts entirely are the distinct Old Town answer, and where a furnace must be replaced, a condensing unit needs a PVC vent and a condensate drain that will not freeze. New forced-air systems in Fort Collins are sized from a Manual J load calculation at altitude — the City requires load calculations for new forced-air systems, and at 5,003 feet a gas furnace derates roughly 12% from its sea-level rating, so sea-level sizing undersizes a home here.
Area status: OFFICIAL — Old Town Neighborhoods Plan + Downtown Plan The City of Fort Collins plans by subarea and neighbourhood plans; it publishes no single official list of named neighbourhoods. Old Town is one of the few areas with a named City plan behind it, so this page uses the plan boundary, not a real-estate label.
University Park and the Eastside (Laurel)
East of College Avenue, the Old Town Neighborhoods Plan continues into the Eastside — College Avenue west, Mountain Avenue north, Riverside and Lemay Avenues east, Prospect Road south. Homes here date back to 1889, and the Laurel School Historic District (National Register, established 1980) sits inside it, bounded by College, Mountain, Smith, Garfield, Peterson and Pitkin streets. The HVAC story is the same historic-retrofit story as the Westside, with a CSU-adjacent twist: many Eastside homes are rentals, so the work is often landlord-driven — a historic rental with a failing furnace rather than an owner-occupied renovation [INFERENCE]. School assignments change — Poudre School District voted in October 2026 to close several schools before the 2027–28 year — so we never hard-code a school assignment from a neighbourhood name; check with the district by address.
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Fort Collins is a heating-dominant climate: 5,797 heating degree days against 624 cooling degree days a year (NOAA 1991–2020), about 30 days a year at or above 90°F and about 150 nights at or below 32°F. About two-thirds of Fort Collins homes heat with piped gas and about three in ten with electricity. One fact worth stating plainly: Old Town design guidelines are voluntary, and no City document bans AC condensers in Old Town — Landmark Preservation Commission precedent treats exterior HVAC as a visibility issue, so placement and screening matter, but a condenser is not prohibited.
DNA Refrigeration Heating & Cooling